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Das Folgende ist, was ich in meinem Code habe, aber das ist nicht speichern und den Zustand meiner Scroll-Position wiederherstellen. Ich versuche, die Bildlaufposition zu speichern und wiederherzustellen, wenn der Benutzer das Telefon dreht.Speichern und Wiederherstellen des Zustands der Recyclerview mit GridLayoutManager
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mRecyclerView = (RecyclerView) findViewById(R.id.rv_main_activity);
mRecyclerView.setHasFixedSize(true);
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
mRecyclerView.setLayoutManager(mGridLayoutManager = new GridLayoutManager(this, 3));
} else {
mRecyclerView.setLayoutManager(mGridLayoutManager = new GridLayoutManager(this, 5));
}
mMoviesAdapter = new MoviesAdapter(this, this);
mRecyclerView.setAdapter(mMoviesAdapter);
if (Build.VERSION.SDK_INT > 10) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}
getSupportLoaderManager().initLoader(ID_MOVIE_LOADER, null, this);
MoviesSyncTask.syncMovies(this, "popular");
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelable(SCROLL_POSITION, mRecyclerView.getLayoutManager().onSaveInstanceState());
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
if (savedInstanceState != null) {
mListState = savedInstanceState.getParcelable(SCROLL_POSITION);
mRecyclerView.getLayoutManager().onRestoreInstanceState(mListState);
}
}
Hat diese Hilfe überhaupt? – Vahalaru